US5309962A - Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades - Google Patents

Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades Download PDF

Info

Publication number
US5309962A
US5309962A US08/058,624 US5862493A US5309962A US 5309962 A US5309962 A US 5309962A US 5862493 A US5862493 A US 5862493A US 5309962 A US5309962 A US 5309962A
Authority
US
United States
Prior art keywords
cam
semicircular
segments
face
blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US08/058,624
Other languages
English (en)
Inventor
Wilfred M. McCord, Jr.
David T. Brutscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch Tool Corp
Original Assignee
Vermont American Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vermont American Corp filed Critical Vermont American Corp
Priority to US08/058,624 priority Critical patent/US5309962A/en
Assigned to VERMONT AMERICAN CORPORATION reassignment VERMONT AMERICAN CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRUTSCHER, DAVID T., MC CORD, WILFRED M., JR.
Priority to TW082104129A priority patent/TW241217B/zh
Priority to CA002123028A priority patent/CA2123028C/en
Application granted granted Critical
Publication of US5309962A publication Critical patent/US5309962A/en
Assigned to CREDO TOOL COMPANY reassignment CREDO TOOL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: VERMONT AMERICAN CORPORATION
Assigned to ROBERT BOSCH TOOL CORPORATION reassignment ROBERT BOSCH TOOL CORPORATION COMBINED MERGER AND CHANGE OF NAME Assignors: VERMONT AMERICAN CORPORATION
Assigned to VERMONT AMERICAN CORPORATION reassignment VERMONT AMERICAN CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). Assignors: CREDO TOOL COMPANY
Assigned to CREDO TECHNOLOGY CORPORATION reassignment CREDO TECHNOLOGY CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ROBERT BOSCH TOOL CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
    • B23D61/02—Circular saw blades
    • B23D61/021—Types of set; Variable teeth, e.g. variable in height or gullet depth; Varying pitch; Details of gullet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/34—Devices for securing a plurality of circular saw blades on a single saw spindle; Equipment for adjusting the mutual distance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
    • B23Q17/2283—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work for adjusting the distance between coaxially rotating tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/005—Tools composed of two or more rotating discs
    • B27G13/007—Tools composed of two or more rotating discs which are adjustable relatively to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G13/00—Cutter blocks; Other rotary cutting tools
    • B27G13/12—Cutter blocks; Other rotary cutting tools for profile cutting
    • B27G13/14—Cutter blocks; Other rotary cutting tools for profile cutting for cutting grooves or tenons
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1902—Gang
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/02—Other than completely through work thickness
    • Y10T83/0304—Grooving
    • Y10T83/0311—By use of plural independent rotary blades
    • Y10T83/0319—Forming common groove
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9319—Toothed blade or tooth therefor
    • Y10T83/9326—Plural separable sections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9374—With spacer interposed between shaft-mounted tools

Definitions

  • the present invention relates to a multiple saw blade adjustable dado cutter assembly.
  • the cutter can be used with a table saw or a radial arm saw, for example, to make dado cuts in board lumber.
  • a pair of cooperating cams, each connected to a saw blade can be adjusted to make a dado cut of a desired width. If the desired dado width is wider than the two blade configuration can cut, a center cam attached to another blade can be inserted between the pair of cooperating cams. With the three blade configuration, the three cams cooperate to allow the three blades to be spaced for the desired width of cut. In both configurations and at any spacing width, the two or three blades employed remain in a generally parallel alignment and transverse to the axis of the arbor on which the assembly is secured.
  • a dado, or housed joint is typically made by cutting a slot into a board, the slot having a depth of cut equal to one half the thickness of the board, the slot being at a location other than the board end, and the slot having a width equal to the thickness of the other board which is to be fitted into the slot.
  • Multiple blade dado cutters which can be adjusted to make cuts of differing width are known in the art. However, they have significant disadvantages when compared to the cutter of the instant invention.
  • the typical dado cutter for use in the home usually has blades which are adjusted so that a blade rotates in a plane which is not transverse to the axis of the arbor on which the blade is mounted. Basically, with this arrangement, the blade wobbles causing vibration forces and only one saw tooth cuts the outer side edge. For example, this alignment generally requires that the board being cut be fed through the cutter slowly and can cause the dado cut to have rough side edges and an uneven bottom cut.
  • U.S. Pat. No. 4,589,458 teaches a two-bladed adjustable dado cutter employing a cam arrangement which permits the two blades to be adjusted for width of cut.
  • the cam arrangement always keeps the two blades juxtaposed at one location along the blade circumference, with the widest spacing between the blades being at another location diametrically opposed from the juxtaposed location.
  • the blades therefore form a V-shape which permits the wobbling forces to neutralize each other.
  • This particular dado cutter is sold by Sears under the trademark "EXCALIBUR".
  • dado cutters are known in which the blades rotate in planes which are transverse to the axis of the arbor on which the blades are mounted.
  • the basic outside two blades must be separated and additional chipper blades and paper shims must be inserted between them.
  • seven different blades may be involved with one dado cutter, the two outside blades which can each cut a width of 1/8 inch or 3.175 mm, four chipper blades which can each cut a width of 1/8 inch or 3.175 mm, and one chipper blade which can cut a width of 1/16 inch or 1.587 mm.
  • this assembly can make dado cuts of from 1/4 inch or 6.350 mm to 13/16 inch or 20.637 mm in 1/16 inch or 1.587 mm increments. It should be appreciated that it is expensive to manufacture seven different blades which must function together in a plurality of arrangements.
  • the present invention is for a multiple saw blade adjustable dado cutter assembly.
  • the cutter of the preferred embodiment having the desired two or three blade configuration, is placed onto the arbor of a table saw or a radial arm saw, for example, to make dado cuts in board lumber.
  • the cutter assembly is adjusted for the desired cutting width using the cooperating cams, each connected to one of the saw blade, and the arbor nut is tightened to secure the blades.
  • the two or three blades employed remain in a generally parallel alignment and transverse to the axis of the arbor on which the assembly is secured. To permit the blades to function with this geometrical relationship and to be adjustable, not all of the blade teeth lie in the same plane.
  • the present invention comprises an adjustable dado cutter mountable onto an arbor, the dado cutter including at least two circular saw blades, each of the blades having an equal diameter, each of the blades having at least one planar saw tooth and at least one off-set saw tooth, each of the blades having at least one circumferential gullet, where the at least two circular saw blades can be nested such that the off-set saw tooth or teeth of one of the circular saw blades can be received by the circumferential gullet or gullets of another of the circular saw blades; and, a cam assembly attached to the at least two circular saw blades, the cam assembly having an axial arbor bore therethrough, the cam assembly being adjustable to space the at least two circular saw blades for a desired dado cutting width, the cam assembly maintaining the at least two saw blades in a parallel relationship transverse to the axial arbor bore.
  • FIG. 1 shows a perspective view of the three-bladed dado cutter assembly of the instant invention without the right cam retaining ring;
  • FIG. 2 shows an exploded perspective view of the three-bladed dado cutter assembly of the instant invention
  • FIG. 3 shows a side view of the right blade having the left blade therebehind
  • FIG. 4 shows a side view of the center blade
  • FIGS. 5a-c depict the cutting path that respective rotating left, center, and right blades would make
  • FIG. 6 shows a right face view of the left cam
  • FIG. 7 shows a side view of the left cam
  • FIG. 8 shows a left face view of the left cam
  • FIG. 9 shows a cross-sectional view of the left cam along the lines 9--9 of FIG. 6;
  • FIG. 10 shows a cross-sectional view of the left cam along the lines 10--10 of FIG. 6;
  • FIG. 11 shows a right face view of the center cam
  • FIG. 12 shows a side view of the center cam
  • FIG. 13 shows a left face view of the center cam
  • FIG. 14 shows a cross-sectional view of the center cam along the lines 14--14 of FIG. 11;
  • FIG. 15 shows a left face view of the right cam
  • FIG. 16 shows a side view of the right cam
  • FIG. 17 shows a right face view of the right cam
  • FIG. 18 shows a side view of the right cam, the view being ninety degrees from the side view of FIG. 16;
  • FIG. 19 shows a cross-sectional view of the right cam along the lines 19--19 of FIG. 15;
  • FIG. 20 shows a left face view of the right cam retainer
  • FIG. 21 shows a side view of the right cam retainer
  • FIG. 22 shows a right face view of the right cam retainer
  • FIG. 23 shows a cross-sectional view of the right cam retainer along the lines 23--23 of FIG. 11;
  • FIG. 24 shows a side view of a pin used to attach a cam and a blade
  • FIG. 25 shows an end view of the pin along the lines 25--25 of FIG. 24.
  • Cutter assembly 10 in the desired two or three blade configuration, is attached to a saw arbor 2 and secured at the desired cutting width by arbor nut 4.
  • the cams 100, 200, 300 have pins and grooves in various cam segments which allow either the left 100 and right 300 cams to cooperate to space the left 20 and right 80 blades to a desired dado cutting width in the two blade configuration or the left 100 and center 200 and right 300 cams to cooperate to space the left 20 and center 60 and right 80 blades to a desired dado cutting width in the three blade configuration.
  • the blades 20, 60, 80 have selected teeth which are off-set or nest in gullets of the adjacent blades, so that the minimum to maximum cutting width of the two or three blade configuration is maximized. It is important to note that for any selected dado cutting width, the blades 20 and 80 (and 60 if in the three blade configuration) remain in a parallel alignment, with each blade lying in a plane transverse to the longitudinal axis of the arbor 2.
  • FIG. 2 The exploded perspective view of the three blade assembly is shown in FIG. 2, with the blades being shown in more detail in FIGS. 3-5 and the cams and retaining ring being shown in more detail in FIGS. 6-23. While the blades can be configured with many different cutting teeth arrangements, the two blade, 20 and 80, arrangement is designed to cut from a minimum dado width of 1/4 inch or 6.350 mm to a maximum dado width of 1/2 inch or 12.700 mm.
  • each blade 20 and 80 has an individual cutting width of 1/4 inch or 6.350 mm
  • the two blades 20 and 80 nest, so that, when placed closest together, their combined teeth only have a cutting width of 1/4 inch or 6.350 mm and second, when placed furthest apart, the two 1/4 inch or 6.350 mm wide blades permit a 1/2 inch or 12.700 mm dado cut.
  • the left and right blades, 20 and 80 each have a cutting width of 1/4 inch or 6.350 mm and the center blade 60 has a cutting width of 5/16 inch or 7.937 mm.
  • the left and right blades 20 and 80 nest into the center blade 60, so that, when placed closest together, their combined teeth only have a cutting width of 1/2 inch or 12.700 mm and, when placed furthest apart, the two 1/4 inch or 6.350 mm wide blades 20 and 80 and the 5/16 inch or 7.937 mm wide blade 60 permit a 13/16 inch or 20.637 mm dado cut. This is the actual thickness of a "one inch" board. It is also important to note that, with the three blade configuration set to the maximum dado cutting width of 13/16 inch or 20.637 mm, the total width of the cams and blades which must be received by the arbor 2 is less than or equal to 7/8 inch or 22.225 mm. This permits the assembly 10 to be used on most commercially available table and radial arm saws, as keeping this dimension to less than or equal to 7/8 inch or 22.225 mm allows the arbor nut 4 to be fully threaded onto the arbor 2 to permit safe saw operation.
  • Left blade 20 has a center bore 22 which receives a portion of left cam 100.
  • Cam bores 24 in blade 20 and bores 102 in left cam 100 align.
  • a pin 12 having a head 13 and a shaft 14, the shaft 14 having a shaft circumferential groove 15 therearound, as seen in FIGS. 24 and 25, can be inserted through a bore 24 and a bore 102 and an E-ring (not shown) can be inserted into groove 15 to secure left blade 20 and left cam 100.
  • left blade 20 has four sets of five saw teeth which lie in the same plane with the blade 20 and two teeth which are off-set from the blade plane.
  • the planar center tooth 28 of each of the sets of five teeth is ground to a flat top, transverse to the plane of the blade.
  • the two planar teeth 26 on either side of planar center tooth 28 are scoring teeth. They are ground with a left to right slope or bevel so that they cut deeper at the location furthest from the right blade 80. This aids in making the sides of the dado cut smoother, as it helps ensure cutting rather than tearing and thus splintering of the wood fibers, as the dado cut is usually made cross-grain.
  • Diametrically opposed and between two of the sets of five teeth 26 and 28 are two right off-set teeth 30, each having a flat top like teeth 28, the flat top also being transverse to the plane of the blade such that the teeth 28 and the teeth 30 will cut the same depth.
  • Diametrically opposed and ninety degrees from the two right off-set teeth 30 are a pair of gullets 32 for receiving the left off-set tooth 71 of the center blade 60 or the two left off-set teeth 90 of the right blade 80, depending on whether the three or two-blade configuration is employed.
  • right blade includes a center bore 82 which receives a portion of right cam 300.
  • right cam 300 is pivotally contained by right blade 80 and a right cam retaining ring 360, right cam retaining ring 360 having a left face 366 and a right face 368.
  • Ring bores 84 in blade 80 and bores 362 in right cam retaining ring 360 align with the right cam 300 being received in a right cam recess 370 of right cam retaining ring 360.
  • these bores 84 and 362 can have pins 12 inserted therethrough, with an E-ring inserted into each pin 12 groove 15 to secure right blade 80 and right cam retaining ring 360.
  • the teeth of right blade 80 are in a similar pattern to the teeth of left blade 20, except the two off-set teeth off-set to the left and the bevel on the scoring teeth is from right to left.
  • Right blade 80 has four sets of five saw teeth which lie in the same plane with the blade 80 and two teeth which are off-set from the blade plane.
  • the planar center tooth 88 of each of the sets of five teeth is ground to a flat top, transverse to the plane of the blade.
  • the two planar teeth 86 on either side of planar center tooth 88 are scoring teeth. They are ground with a right to left slope or bevel so that they cut deeper at the location furthest from the left blade 20. This aids in making the sides of the dado cut smoother, as it helps ensure cutting rather than tearing and thus splintering of the wood fibers, as the dado cut is usually made cross-grain.
  • Diametrically opposed and between two of the sets of five teeth 86 and 88 are two left off-set teeth 90, each having a flat top like teeth 88, the flat top also being transverse to the plane of the blade such that the teeth 88 and the teeth 90 will cut the same depth.
  • Diametrically opposed and ninety degrees from the two left off-set teeth 90 are a pair of gullets 92 for receiving the right off-set tooth 70 of the center blade 60 or the two right off-set teeth 30 of the left blade 20, depending on whether the three or two-blade configuration is employed.
  • FIG. 3 shows a right side view of the right blade 80 with the left blade 20 therebehind in the two-blade configuration. It is seen that in the two-blade configuration, the right blade 80 left off-set teeth 90 are spaced very approximately about ninety degrees from the left blade 20 right off-set teeth 30, the offset teeth 90 and 30 being received by gullets 32 and 92, respectively. When viewed from the side, as in FIG. 3, the teeth 86/88 of blade 80 are not in alignment with the teeth 26/28 of blade 20. For example, when looking at the top portion of FIG. 3, blade 80 has two of its teeth 86 to the left of the top gullet 92. A tooth 26 of blade 20, behind blade 80, lies approximately midway between the two identified teeth 86. As seen, similar relationships exist with the other blade 80/20 teeth. This is necessary to permit full nesting of the left and right blades, as, in the preferred embodiment, the saw cutting teeth are wider than the saw blades to which they are attached.
  • Center blade 60 has a center bore 62 which receives a portion of center cam 200.
  • a pair of diametrically opposed cam bores 64 in blade 60 and grooves 202 in center cam 200 align, so that center cam 200 can be pivotally attached to center blade 60.
  • bores 64 and grooves 202 can have pins 12, previously described, inserted therethrough and an E-ring inserted into each pin 12 groove 15 to pivotally secure center blade 60 and center cam 200.
  • center blade 60 has two sets of five saw teeth having diametrically opposed gullets 72 therebetween.
  • the right and left off-set teeth are diametrically opposed and identified by the numerals 70 and 71, respectively. All ten teeth are ground to a flat top, transverse to the plane of the blade.
  • each of the gullets 72 receives both a right off-set tooth 30 from left blade 20 and a left off-set tooth 90 from right blade 80. Therefore, gullets 72 are sized larger than gullets 32 and 92.
  • One of the gullets 32 of left blade 20 receives the left off-set tooth 71 of center blade 60 and one of the gullets 92 of right blade 80 receives the right off-set tooth 70 of center blade 60.
  • FIGS. 5a-c depict the cutting paths that the respective left 20, center 60, and right 80 blades would make if the blades were rotated at least one revolution. To depict these cutting paths, these figures have been drawn to show the planar teeth and the off-set teeth in a side by side arrangement. The actual teeth arrangement and the blade nesting have been previously described and shown in FIGS. 1-4.
  • FIGS. 2 and 6-23 show the cooperating cams 100, 200, 300 and right cam retaining ring 360.
  • FIGS. 6-10 show the left cam 100 in detail.
  • Left cam 100 has a left face 106 and a right face 108.
  • Central to left cam 100 is an arbor bore 104.
  • Three left blade bores 102 are toward the circumference of cam 100. Bores 102 are equally spaced from each other and are equidistant from arbor bore 104. Bores 102 are used to attach cam 100 and left blade 20, as was previously explained.
  • Left face 106 is basically flat.
  • Right face 108 has a pair of outer cam segments 110 and a pair of inner cam segments 120. Segments 110 form a circular pattern, as do segments 120. These circles are concentric having arbor bore 104 at their center.
  • the two outer cam segments 110 have diametrically opposed low points 112 and diametrically opposed high points 114.
  • the low point 112 of one cam segment 110 is adjacent the high point 114 of the other cam segment 110.
  • the two inner cam segments 120 have diametrically opposed low points 122 and diametrically opposed high points 124.
  • the low point 122 of one cam segment 120 is adjacent the high point 124 of the other cam segment 120.
  • Low points 112 and 122 lie in the same plane with right face 108.
  • the cam segments 110 and 120 have a linear rise from their respective low points 112 and 122 to their respective high points 114 and 124.
  • the high points 124 of inner cam segments 120 are ⁇ higher" (further from the plane of right face 108) (0.223 inch or 5.664 mm) than the high points 114 of outer cam segments 110 (0.167 inch or 4.242 mm).
  • a pair of diametrically opposed pins 116 extend from cam segments 110 and are positioned toward said high points 114, shown in FIG. 6 to be on radii 11.5 degrees from radii drawn to high points 114.
  • One of inner cam segments 120 contains a pin 126, pin 126 being in alignment with pins 116.
  • respective pins 116 or pin 126 engage respective grooves 218 of center cam 200 or groove 328 of right cam 300, as is explained hereinafter.
  • Right cam 300 has similar geometry to left cam 100, and is shown in detail in FIGS. 15-19.
  • the right cam retaining ring 360 used to pivotally secure right cam 300 and right blade 80 is shown in detail in FIGS. 20-23. This connectivity has been previously explained.
  • Right cam 300 has a left face 306 and a right face 308. Central to right cam 300 is an arbor bore 304. Central to right cam retaining ring 360 is a comparatively large cam adjustment means bore 372.
  • Right cam 300 right face 306 is basically flat, having cam adjustment means 340 extending transverse therefrom.
  • cam adjustment means 340 comprises a pair of diametrically opposed adjusters which a user can engage to rotate right cam 300 with respect to the other cams 100 and 200.
  • Left face 306 has a pair of outer cam segments 310 and a pair of inner cam segments 320. Segments 310 form a circular pattern, as do segments 320. These circles are concentric having arbor bore 304 at their center.
  • the two outer cam segments 310 have diametrically opposed low points 312 and diametrically opposed high points 314. The low point 312 of one cam segment 310 is adjacent the high point 314 of the other cam segment 310.
  • the two inner cam segments 320 have diametrically opposed low points 322 and diametrically opposed high points 324.
  • the low point 322 of one cam segment 320 is adjacent the high point 324 of the other cam segment 320.
  • Low points 312 and 322 lie in the same plane with left face 306.
  • the cam segments 310 and 320 have a linear rise from their respective low points 312 and 322 to their respective high points 314 and 324.
  • the high points 324 of inner cam segments 320 are "higher" (further from the plane of left face 306) (0.223 inch or 5.664 mm) than the high points 314 of outer cam segments 310 (0.197 inch or 5.004 mm).
  • a pair of diametrically opposed pins 316 extend from cam segments 310 toward said high points 314, shown in FIG. 15 to be on radii 11.5 degrees from radii to high points 314.
  • One of inner cam segments 320 contains a radial groove 328, radial groove 328 having an arc of about 160 degrees.
  • pin 126 of left cam 100 is inserted into radial groove 328 and the inner cam segments 120 and 320 abut.
  • Rotating cam adjustment means 340 such that pin 126 moves from one end of groove 328 to the other end of groove 328 moves blades 20 and 80 in a parallel relationship from their minimum to maximum spacing therebetween.
  • Outer cam segments 110 and 310 do not function in the two-blade configuration.
  • Center cam 200 is shown in detail in FIGS. 11-14, with FIG. 11 showing the right face 208 having outer cam segments 210R which engages right cam 300 outer cam segments 310 and FIG. 13 showing the left face 306 having outer cam segments 210L which engages left cam 100 outer cam segments 110.
  • Central to center cam 200 is an arbor bore 204.
  • Three left blade bores 102 are toward the circumference of cam 100.
  • a pair of center blade grooves 202 are equidistant from arbor bore 204 and toward the outer circumference of center cam 200.
  • Grooves 202 are used to attach cam 200 and center blade 60, for example, by inserting pins 12 into center blade 60 cam bores 64 and grooves 202 and attaching an E-ring to each pin 12 shaft groove 15, as was previously explained with respect to attaching left blade 20 to left cam 100 and to attaching right blade 80 to right cam retaining ring 360.
  • Right face 208 has a pair of outer cam segments 210R and left face 206 has a pair of outer cam segments 210L.
  • Segments 210R form a circular pattern, as do segments 210L. These circles are concentric having arbor bore 204 at their center.
  • the two outer cam segments 210R have diametrically opposed low points 212R and diametrically opposed high points 214R.
  • the low point 212R of one cam segment 210R is adjacent the high point 214R of the other cam segment 210R.
  • segments 210L as the two outer cam segments 210L have diametrically opposed low points 212L and diametrically opposed high points 214L.
  • the low point 212L of one cam segment 210L is adjacent the high point 214L of the other cam segment 210L.
  • low points 212R and 212L lie in the same plane with right face 208 and left face 206, respectively.
  • the cam segments 210R and 210L have a linear rise from their respective low points 212R and 212L to their respective high points 214R and 214L.
  • the high point 214R is further from respective right face 208 (0.270 inch or 6.858 mm) than high point 214L is from respective left face 206 (0.150 inch or 3.810 mm).
  • the relationships described herein, which permit linear adjustment of the blades, are those of the preferred embodiment and are not limiting the scope of the invention.
  • inner cam segment receiving slots 230 are sized to receive the "highest" portions of inner cam segments 120 and 320 of respective cams 100 and 300 so that in the three-blade configuration the blades 20, 60, and 80 can come closer together than if slots 230 were not present.
  • cam adjustment means 340 on right cam 300 causes the right blade 80 to move away from the center blade 60.
  • additional turning of cam adjustment means 340 on right cam 300 causes the right blade 80 and the center blade 60 to move away from the left blade 20.
  • cam adjustment means 340 is turned in the opposite direction. In this situation, the right blade 80 moves toward the center blade 60 until pins 316 reach the other ends of pin grooves 218R.
  • the blades 20 and 80 and possibly 60 can have their respective center bores 22, 82, 62 resized to fit a saw arbor rather than receive respective cams 100, 300, 200.
  • the three, or more, blades 20, 60, 80 could then be sold with some washer-type spacers.
  • a user could place blade 20 onto a arbor 2, insert an appropriate number of spacer washers, add either center blade 60 with more spacers and right blade 80 or right blade 80 to set the desired dado cutting width. The user would then secure the blades and spacers with arbor nut 4.
  • the cams 100, 200, 300 of the preferred embodiment have a maximum total width to be received by the arbor 2 of 7/8 inch or 22.225 mm which permits the assembly 10 to be used on most commercially available table and radial arm saws, as keeping this dimension to less than or equal to 7/8 inch or 22.225 mm allows the arbor nut 4 to be fully threaded onto the arbor 2 to permit safe saw operation.
  • there are industrial saws available which have "longer" arbors and will, therefore, receive a blade/cam arrangement having a width exceeding 7/8 inch or 22.225 mm. It is therefore envisioned that more than three blade 20, 60, 80 configurations are possible within the scope of the present invention as already disclosed.
  • a four blade configuration is easily envisioned employing left blade 20 with left cam 100, right blade 80 with right cam 300, and a pair of center blades 60 with a pair of center cams 200.
  • the geometry of the cam segments on the right face of the left center cam and the left face of the right center cam would be altered to allow these cam segments to cooperate.
  • pins would be placed into the cam segments of either the right face of the left center cam or the left face of the right center cam to mate with the opposed cam segment grooves.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Drilling Tools (AREA)
  • Sawing (AREA)
US08/058,624 1993-05-13 1993-05-13 Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades Expired - Lifetime US5309962A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US08/058,624 US5309962A (en) 1993-05-13 1993-05-13 Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades
TW082104129A TW241217B (enExample) 1993-05-13 1993-05-25
CA002123028A CA2123028C (en) 1993-05-13 1994-05-06 Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/058,624 US5309962A (en) 1993-05-13 1993-05-13 Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades

Publications (1)

Publication Number Publication Date
US5309962A true US5309962A (en) 1994-05-10

Family

ID=22017960

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/058,624 Expired - Lifetime US5309962A (en) 1993-05-13 1993-05-13 Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades

Country Status (3)

Country Link
US (1) US5309962A (enExample)
CA (1) CA2123028C (enExample)
TW (1) TW241217B (enExample)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537728A (en) * 1995-03-23 1996-07-23 Tom Decker Magnetic dado shim
US5823934A (en) * 1993-03-23 1998-10-20 Ferrone; Rock A. Automatic trimming machine with split rotary knife assembly
US5895908A (en) * 1995-10-25 1999-04-20 Fujitsu Limited Bar code scanner with laser power down feature
US6021828A (en) * 1999-04-19 2000-02-08 Cut Rite Corporation Trim saw with waste removal blades
US6461940B1 (en) * 1999-06-21 2002-10-08 Murata Manufacturing Co., Ltd. Dicing blade and method of producing an electronic component
WO2003095164A1 (en) * 2002-05-09 2003-11-20 Dimar Ltd. Sawing device having an adjustable profile
US6675849B1 (en) 2003-02-19 2004-01-13 Mark Lackley Adjustable tenoning shim
US20040149116A1 (en) * 2003-01-21 2004-08-05 Dieter Jahn Device for sawing apart two-up book blocks
DE102004026849B3 (de) * 2004-06-02 2005-11-24 Hilti Ag Trennscheibenanordnung
US20060200152A1 (en) * 2005-02-23 2006-09-07 Karubian Ralph K Multi-purpose cutting tool
US20060207687A1 (en) * 2005-03-15 2006-09-21 Churchland Mark T Systems for orienting strands and other wood particles
US20070173183A1 (en) * 2006-01-25 2007-07-26 Keene Milford M Cutting tool with integrated abrasive trimming elements
US20090013841A1 (en) * 2007-07-11 2009-01-15 Ferag Ag Method and device for separating continuously conveyed material webs
US20090199692A1 (en) * 2008-01-22 2009-08-13 Saint-Gobain Abrasives, Inc. Circular Saw Blade With Offset Gullets
US20090199693A1 (en) * 2005-04-20 2009-08-13 Saint-Gobain Abrasives, Inc. Circular Saw Blade With Elliptical Gullets
US20100139469A1 (en) * 2007-03-14 2010-06-10 Paul Matteucci Cutting tool
US20110219930A1 (en) * 2010-03-15 2011-09-15 Ainsworth Lumber Co. Ltd. Profiling saw blade and method of using
US20110270263A1 (en) * 2008-10-31 2011-11-03 David Berk Orthopedic cast remover
US20110303066A1 (en) * 2010-06-09 2011-12-15 Li Yuedui Cutting apparatus with a pair of counter-rotating saw blades
US20130048329A1 (en) * 2010-11-30 2013-02-28 Zhongguang Qian Twin saw blade cutter
US20130149051A1 (en) * 2011-12-11 2013-06-13 Ming Li Groove cutter assembly and method for fabricating same
WO2013083019A1 (en) * 2011-12-06 2013-06-13 Bosch Power Tools (China) Co., Ltd. Saw blade
US20130272807A1 (en) * 2010-12-07 2013-10-17 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Cutting tool for machining a workpiece
WO2014178053A1 (en) * 2013-05-01 2014-11-06 Dimar Ltd. Variable width saw blade
WO2017066274A1 (en) * 2015-10-12 2017-04-20 Sam Baker Blade for cutting roots
JP2017222020A (ja) * 2016-06-14 2017-12-21 株式会社トリガー 回転切断刃
US10105773B1 (en) * 2004-09-02 2018-10-23 Robert Bosch Tool Corporation Box joint blade system
CN109333747A (zh) * 2018-11-19 2019-02-15 扬州快乐机械有限公司 一种铺装机
USD847228S1 (en) 2017-04-24 2019-04-30 Micro Jig, Inc. Arbor shim
US10575472B2 (en) 2015-10-12 2020-03-03 Samuel James Baker Blade assembly for cutting roots
CN111644851A (zh) * 2020-06-15 2020-09-11 天津市威达数控机械有限公司 一种组合倒角锯装置
US11059113B2 (en) * 2016-11-30 2021-07-13 Rollem Patent Products Limited Slitting machine
CN113843851A (zh) * 2021-08-31 2021-12-28 南京信息职业技术学院 一种切割装置
WO2022248930A1 (en) * 2021-05-25 2022-12-01 C.M.T. Utensili S.P.A. Rotatable tool-assembly for processing wooden panels and the like

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019104176A1 (en) 2017-11-27 2019-05-31 Dynatech Systems, Inc. Material removal manufacture, assembly, and method of assembly

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US486874A (en) * 1892-11-29 huther
US800143A (en) * 1905-03-06 1905-09-26 William R Fox Cutter-head.
GB124643A (en) * 1918-06-08 1919-04-03 Asa Lees & Co Ltd Improvements in cutters for use in Machines for Forming Aircraft Propeller Blades, Struts and like Articles Having Curved or Waved or similar Surfaces.
US1545293A (en) * 1924-07-11 1925-07-07 Jesse D Ware Woodworking tool
US1763463A (en) * 1929-04-22 1930-06-10 Garthe John Dado cutter
US2592382A (en) * 1947-03-06 1952-04-08 Phillipe J Blais Adjustable milling cutter
US2665722A (en) * 1951-02-19 1954-01-12 Magna Engineering Corp Dado saw assembly
US2788812A (en) * 1955-05-24 1957-04-16 John W Jacobs Adjustable multi-blade dado cutter
US2985206A (en) * 1960-04-25 1961-05-23 Walter W Letts Multi-disc rotary breaker and scraper
US4589458A (en) * 1984-10-29 1986-05-20 Vermont American Corporation Multiple saw blade adjustable dado cutter
US4641562A (en) * 1985-08-16 1987-02-10 Bremen Associates Incorporated Cutting tool for making a smooth saw cut

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US486874A (en) * 1892-11-29 huther
US800143A (en) * 1905-03-06 1905-09-26 William R Fox Cutter-head.
GB124643A (en) * 1918-06-08 1919-04-03 Asa Lees & Co Ltd Improvements in cutters for use in Machines for Forming Aircraft Propeller Blades, Struts and like Articles Having Curved or Waved or similar Surfaces.
US1545293A (en) * 1924-07-11 1925-07-07 Jesse D Ware Woodworking tool
US1763463A (en) * 1929-04-22 1930-06-10 Garthe John Dado cutter
US2592382A (en) * 1947-03-06 1952-04-08 Phillipe J Blais Adjustable milling cutter
US2665722A (en) * 1951-02-19 1954-01-12 Magna Engineering Corp Dado saw assembly
US2788812A (en) * 1955-05-24 1957-04-16 John W Jacobs Adjustable multi-blade dado cutter
US2985206A (en) * 1960-04-25 1961-05-23 Walter W Letts Multi-disc rotary breaker and scraper
US4589458A (en) * 1984-10-29 1986-05-20 Vermont American Corporation Multiple saw blade adjustable dado cutter
US4641562A (en) * 1985-08-16 1987-02-10 Bremen Associates Incorporated Cutting tool for making a smooth saw cut

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5823934A (en) * 1993-03-23 1998-10-20 Ferrone; Rock A. Automatic trimming machine with split rotary knife assembly
US5537728A (en) * 1995-03-23 1996-07-23 Tom Decker Magnetic dado shim
WO1996029185A1 (en) * 1995-03-23 1996-09-26 Decker, Tom Magnetic dado shim
US5895908A (en) * 1995-10-25 1999-04-20 Fujitsu Limited Bar code scanner with laser power down feature
US6021828A (en) * 1999-04-19 2000-02-08 Cut Rite Corporation Trim saw with waste removal blades
US6461940B1 (en) * 1999-06-21 2002-10-08 Murata Manufacturing Co., Ltd. Dicing blade and method of producing an electronic component
WO2003095164A1 (en) * 2002-05-09 2003-11-20 Dimar Ltd. Sawing device having an adjustable profile
US20060070506A1 (en) * 2002-05-09 2006-04-06 Igor Berkowitz Sawing device having an adjustable profile
US7249619B2 (en) * 2002-05-09 2007-07-31 Dimar Ltd. Sawing device having an adjustable profile
US20040149116A1 (en) * 2003-01-21 2004-08-05 Dieter Jahn Device for sawing apart two-up book blocks
US6675849B1 (en) 2003-02-19 2004-01-13 Mark Lackley Adjustable tenoning shim
DE102004026849B3 (de) * 2004-06-02 2005-11-24 Hilti Ag Trennscheibenanordnung
EP1602462A1 (de) * 2004-06-02 2005-12-07 HILTI Aktiengesellschaft Trennscheibenanordnung
US10105773B1 (en) * 2004-09-02 2018-10-23 Robert Bosch Tool Corporation Box joint blade system
US20060200152A1 (en) * 2005-02-23 2006-09-07 Karubian Ralph K Multi-purpose cutting tool
US7520305B2 (en) * 2005-03-15 2009-04-21 Weyerhaeuser Nr Company Systems for orienting strands and other wood particles
US20060207687A1 (en) * 2005-03-15 2006-09-21 Churchland Mark T Systems for orienting strands and other wood particles
US20090199693A1 (en) * 2005-04-20 2009-08-13 Saint-Gobain Abrasives, Inc. Circular Saw Blade With Elliptical Gullets
US20070173183A1 (en) * 2006-01-25 2007-07-26 Keene Milford M Cutting tool with integrated abrasive trimming elements
US20100139469A1 (en) * 2007-03-14 2010-06-10 Paul Matteucci Cutting tool
US20090013841A1 (en) * 2007-07-11 2009-01-15 Ferag Ag Method and device for separating continuously conveyed material webs
US8069759B2 (en) * 2007-07-11 2011-12-06 Ferag Ag Method and device for separating continuously conveyed material webs
US20090199692A1 (en) * 2008-01-22 2009-08-13 Saint-Gobain Abrasives, Inc. Circular Saw Blade With Offset Gullets
US8701536B2 (en) * 2008-01-22 2014-04-22 Saint-Gobain Abrasives, Inc. Circular saw blade with offset gullets
US20110270263A1 (en) * 2008-10-31 2011-11-03 David Berk Orthopedic cast remover
US8414595B2 (en) * 2008-10-31 2013-04-09 David Feldman Orthopedic cast remover
WO2011115670A1 (en) * 2010-03-15 2011-09-22 Ainsworth Lumber Co. Ltd. Profiling saw blade and method of using
US10773412B2 (en) 2010-03-15 2020-09-15 Norbord Inc. Profiling saw blade and method of using
US20110219930A1 (en) * 2010-03-15 2011-09-15 Ainsworth Lumber Co. Ltd. Profiling saw blade and method of using
US9079326B2 (en) 2010-03-15 2015-07-14 Ainsworth Lumber Co. Ltd. Profiling saw blade and method of using
US20110303066A1 (en) * 2010-06-09 2011-12-15 Li Yuedui Cutting apparatus with a pair of counter-rotating saw blades
US10124427B2 (en) 2010-11-30 2018-11-13 Ningbo Blackpine Tools Co., Ltd. Twin saw blade cutter
US20130048329A1 (en) * 2010-11-30 2013-02-28 Zhongguang Qian Twin saw blade cutter
US20130272807A1 (en) * 2010-12-07 2013-10-17 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Cutting tool for machining a workpiece
US9352402B2 (en) * 2010-12-07 2016-05-31 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Cutting tool for machining a workpiece
WO2013083019A1 (en) * 2011-12-06 2013-06-13 Bosch Power Tools (China) Co., Ltd. Saw blade
US20130149051A1 (en) * 2011-12-11 2013-06-13 Ming Li Groove cutter assembly and method for fabricating same
WO2014178053A1 (en) * 2013-05-01 2014-11-06 Dimar Ltd. Variable width saw blade
WO2017066274A1 (en) * 2015-10-12 2017-04-20 Sam Baker Blade for cutting roots
US9844189B2 (en) 2015-10-12 2017-12-19 Samuel James Baker Blade for cutting roots
US10575472B2 (en) 2015-10-12 2020-03-03 Samuel James Baker Blade assembly for cutting roots
JP2017222020A (ja) * 2016-06-14 2017-12-21 株式会社トリガー 回転切断刃
US11059113B2 (en) * 2016-11-30 2021-07-13 Rollem Patent Products Limited Slitting machine
USD847228S1 (en) 2017-04-24 2019-04-30 Micro Jig, Inc. Arbor shim
CN109333747A (zh) * 2018-11-19 2019-02-15 扬州快乐机械有限公司 一种铺装机
CN111644851A (zh) * 2020-06-15 2020-09-11 天津市威达数控机械有限公司 一种组合倒角锯装置
CN111644851B (zh) * 2020-06-15 2022-02-11 天津市威达数控机械有限公司 一种组合倒角锯装置
WO2022248930A1 (en) * 2021-05-25 2022-12-01 C.M.T. Utensili S.P.A. Rotatable tool-assembly for processing wooden panels and the like
CN113843851A (zh) * 2021-08-31 2021-12-28 南京信息职业技术学院 一种切割装置
CN113843851B (zh) * 2021-08-31 2022-11-29 南京信息职业技术学院 一种切割装置

Also Published As

Publication number Publication date
TW241217B (enExample) 1995-02-21
CA2123028C (en) 2005-01-04
CA2123028A1 (en) 1994-11-14

Similar Documents

Publication Publication Date Title
US5309962A (en) Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades
CA1257179A (en) Multiple saw blade adjustable dado cutter
US5027684A (en) Collar for mounting a split saw blade on an arbor
US7013784B2 (en) Variable tooth saw blade
US4627322A (en) Circular saw blade assembly
US4614463A (en) Cutter having removable cutting blades
JPH01295709A (ja) フライス
US4295763A (en) Plug cutter
CA2155392A1 (en) Drill Bit Having Enhanced Cutting Structure and Stabilizing Features
RU93050070A (ru) Режущая пластина для фрез
KR900015818A (ko) 슈레더용 절단기
US3798724A (en) Locking arrangement for cutting blade inserts
CA1301460C (en) Lobed chuck for saw regrinding
ATE380618T1 (de) Fräser
RU92004424A (ru) Узел крепления диска продольного пиления и насадной фрезы
CA2416473A1 (en) Adjustable profiling head for a wood cutting apparatus
EP0506683B1 (en) Circular saw blade assembly
DE60213233D1 (de) Sägeblattpaar
KR920703262A (ko) 정면 기어를 생산하기 위한 호브(hob)
US5571250A (en) Cutting blade mounting arrangement for inserted blade cutting heads
US6158320A (en) Saw arbor with splined mandrel and mating, timed internally and externally splined saw blade mounting sleeve
US4885968A (en) Mounting of the circularly fitted inserted tooth of a circular saw
US20090126582A1 (en) Meat Cutter
US5259428A (en) Rotary cutters
JPS5920909Y2 (ja) 組合せフライスカツタ−

Legal Events

Date Code Title Description
AS Assignment

Owner name: VERMONT AMERICAN CORPORATION, KENTUCKY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MC CORD, WILFRED M., JR.;BRUTSCHER, DAVID T.;REEL/FRAME:006541/0686

Effective date: 19930512

STPP Information on status: patent application and granting procedure in general

Free format text: APPLICATION UNDERGOING PREEXAM PROCESSING

CC Certificate of correction
AS Assignment

Owner name: CREDO TOOL COMPANY, OREGON

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VERMONT AMERICAN CORPORATION;REEL/FRAME:007786/0882

Effective date: 19950101

FPAY Fee payment

Year of fee payment: 4

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: CREDO TECHNOLOGY CORPORATION, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ROBERT BOSCH TOOL CORPORATION;REEL/FRAME:014615/0215

Effective date: 20030101

Owner name: ROBERT BOSCH TOOL CORPORATION, KENTUCKY

Free format text: COMBINED MERGER AND CHANGE OF NAME;ASSIGNOR:VERMONT AMERICAN CORPORATION;REEL/FRAME:014609/0574

Effective date: 20021227

Owner name: VERMONT AMERICAN CORPORATION, DELAWARE

Free format text: MERGER;ASSIGNOR:CREDO TOOL COMPANY;REEL/FRAME:014609/0549

Effective date: 20021227

FPAY Fee payment

Year of fee payment: 12